Revolving tube drive for winding a fibrous strand on cross wound bobbins on drawing frames



Nov. 26, 1963 G. WERNER 3,112,083

REVOLVING TUBE DRIVE FOR WINDING A FIBROUS STRAND ON CROSS WOUND BOBBINSON DRAWING FRAMES Filed June 15, 1962 g [fryer/fori' United StatesPatent Oiice 3,112,083 Patented Nov. 26, 1963 3,112,083 REVOLVNG TUBEDRIVE FOR WINDING A FIBRGUS STRAND N CROSS WOUND BOBBINS 0N DRAWINGFRAMES Gnther Werner, Reinbek, near Hamburg, Germany, as-

signor to Hanseatische Motoren-Gesellschaft m.b.H., Hamburg-Bergedorf,Germany Filed June 13, 1962, Ser. No. 202,129 Claims priority,application Germany June 28, 1961 6 Claims. (Cl. 242-544) This inventionrelates to a revolving tube drive for winding a brous strand on crosswound bobbins on drawing frames in which the revolving tube whichchanges its direction of rotation executes a swinging oscillatingmovement, and in which the axis of the revolving tube is maintained at aconstant angle with respect to the axis of the cross wound bobbin.

The revolving tube drives of the prior art have the disadvantage thatthe variation in the strand length resulting from the change or swingmovement of the revolving tube-starting at the supply roller or thedrawing rollers of the drawing frame and ending at the revolvingtube-must be compensated. This was heretofore accomplished by acomparatively complicated mechanism and was generally obtained byspecial link members or feeder rollers for the cross wound bobbin whichare so positioned that the feeder rollers are additionally moved so asto arrange their axes in accordance with the particular position of therevolving tube.

It is an object of the invention to simplify this prior arrangement bymounting the revolving tube on a swinging arm the pivot axis of whichlies in the plane or at the level of the iibrous strand as it leaves theframe, or at the level of the gripping of the strand between the twodelivery rollers of the drawing frame, while between the two elevatedend positions of the axis of the swinging revolving tube, which movesrelative to the axis of the cross wound bobbin, is located a centerposition which lies at the level of the gripping line formed between thecross wound bobbin and the winding rollers.

In the revolving drive according to the invention care is taken, as willbe described hereinafter, that any special devices for compensating thelength of the fibrous strand are not required, since the revolving tubeexecutes a perpendicular swinging movement whereby the distance betweenthe gripping line of the delivery roller or of the drawing cylinder ofthe drawing frame and the revolving tube remains always the same.

The elevation of the revolving tube admittedly varies relatively to thewinding axis. The resulting differences in the strand length, however,are so small in the selected center position of the tube that they canbe neglected.

Apart from the fact that with the revolving tube drive according to theinvention much higher winding speeds can be obtained, this method ofoperation has the advantage that the reversal point of the revolvingtube can be placed at any desired point with respect to the changingmovement, because both the revolving tube and the swinging arm carryingit can be operated by a crank drive. The angular position of the crankof the aforesaid crank drive is adjustable according to requirements.

Furthermore, the revolving tube is driven by a chain which is guidedover a sprocket wheel rotatable about the pivot axis of the swinging armand is connected with one end to a crank of the crank drive and with theother end in known manner to an anchored spring. The sprocket wheel isconnected in axial alignment with another sprocket wheel on the sameshaft, and this last named sprocket wheel is connected by a chain with asprocket wheel fixedly attached to the revolving tube.

Since the revolving tube is driven in this manner by a sprocket wheelrotatable about the pivot axis of the swinging arm, the aforesaidadvantage of greater simplicity is obtained.

The invention is shown diagrammatically in the form of a speci-ficexample on the accompanying drawings wherein:

FIG. l is a side view of the revolving tube drive,

FIG. 2 is an end view of the same, and

FIG. 3 is a plan view of a revolving tube drive.

A depending swinging arm 1 is operated by a crank drive 2, 3, 4 (FIG. 2)which consists of a horizontal lever 3 attached with one end to a crank2 of a horizontal crankshaft 4. The arm 1 oscillates in a vertical planein the direction of the arrow P on a pivot pin 6 supported with its endsin bearings 5 and 5. The axis of the bearings 5, 5' is arranged at thesame level as the delivery rollers 16, 16', 16" forming a part of adrawing frame having a gripping indicated as at 15.

The other end of the lever 3 is pivotally connected by a pin 4 to acontrol portion of the swinging arm 1. The revolving tube 7 is rotatablysupported in the lower part of the swinging arm 1. A sprocket Wheel 8 isxedly mounted on the tube 7 and is driven by an endless chain 9 from asprocket wheel 10. Obviously, this chain drive may be replaced by aV-belt drive or the like.

The sprocket wheel 10 is iixedly connected to a sprocket wheel 11 whichis driven by a ilexible member such as a chain 12 from a second crank 13of the crankshaft 4. The chain 12 is subjected to the action of a spring14 at the other end, the remote end of the spring being supported at afixed point. The two end positions of the swinging arm 1 are shown indotted lines in FIG. 2.

The operation of the revolving tube drive of the invention is asfollows:

The iibrous strand after passing through the drawing frame and leavingthe delivery or drawing cylinders 16, 16', and in some cases passingunder a presser roller 16" at the gripping point 15, enters at 17 thebore of the revolving tube 7. The outlet end 18 of the revolving tubevaries its position in vertical direction during the oscillatingmovement of the arm 1 and moves relatively to the supporting plane 19 ofthe cross wound bobbin 20 which latter during its winding rests on thetwo supporting rollers 21 and 21. Between the `different verticalpositions of the swinging revolving tube axis lies a center position atthe level of the supporting plane for the cross wound bobbin.

The resulting change in the distance between the supporting plane 19 andthe outlet end 18 is so small that it is in practice of no importance.In FIG. l the upper position of the outlet end 1S of the revolving tubeis indicated in chain dot lines.

What I claim is:

1. A revolving tube drive for winding a fibrous strand on cross woundbobbins after passing through a drawing frame, including winding rollersfor supporting the cross wound bobbin, a revolving tube, means foroscillating said revolving tube so as to maintain a uniform angle normalto the winding axis of the cross wound bobbin, said means comprising aswinging arm adjacent the free end of which said revolving tube isrotatably mounted, and means for pivotally supporting said arm about anaxis remote from the axis of said tube axis with the axis of said armarranged in the plane in which the same fibrous strand leavesthe drawingframe, whereby the different levels to which the revolving tube is movedduring its swinging movement include a center position which is locatedat the level of the gripping point between the cross wound bobbin andsaid winding rollers.

2. A revolving tube drive according to claim l, including means forminga crank drive for oscillating said swinging arm carrying said revolvingtube.

3. A revolving tube drive for winding a fibrous strand on cross woundbobbins after passing through a drawing frame, including a pair ofspaced parallel winding rollers for supporting the cross wound bobbin, arevolving tube, means for oscillating the revolving tube so as tomaintain a uniform angle normal to the winding axis of the cross woundbobbin, said means comprising a depending swinging arm rotatablysupporting said revolving tube adjacent its lower end, and means forpivotally supporting said arm about an axis remote from the axis of saidtube axis with the pivot axis of said arm arranged in the same plane inwhich the fibrous strand leaves the drawing frame, whereby the differentlevels to which the revolving tube is moved during its swinging movementinclude a center position which is located at the level of the grippingpoint between the cross wound bobbin and said pair of winding rollers.

4. A revolving tube drive for winding a fibrous strand on cross woundbobbins after passing through a drawing frame, including a pair ofspaced parallel winding rollers for supporting the cross wound bobbin, arevolving tube, means for oscillating the revolving tube so as tomaintain a uniform angle to the winding axis of the cross wound bobbin,said means comprising a depending swinging arm rotatably supporting saidrevolving tube adjacent its lower end with the swing axis of said armand the axis of said revolving tube arranged offset and parallel, meansfor pivotally supporting said arm about an axis remote from the axis ofsaid tube axis with the axis of said arm arranged in the same plane inwhich the fibrous strand leaves the drawing frame, said tube axisremaining normal to the axis of said bobbin throughout its to and fromovement whereby the different levels to which the revolving tube ismoved during its swinging movement include a center position which islocated at the level of the gripping point between the cross woundbobbin and said pair of winding rollers, and means including acrankshaft and an arm connecting a crank on said crankshaft with saidswinging arm between the ends of the latter for oscillating saidswinging arm.

5. A revolving tube drive for winding a fibrous strand on cross woundbobbins after passing through a drawing frame, including winding rollersfor supporting the cross wound bobbin, a revolving tube, and means foroscillating said revolving tube so as to maintain a uniform angle normalto the winding axis of the cross wound bobbin, said means comprising aswinging arm, the revolving tube being rotatably mounted adjacent thefree end of `said arm, means for pivotally supporting said arm forswinging movement about an axis remote from the axis of said tube axiswith the axis of said arm arranged in the same plane in which thefibrous strand leaves the drawing frame, means for rotating saidrevolving tube, said rotating means including a wheel rotatable aboutthe pivot axis of said arm, a longitudinal flexible member engaging saidwheel, a crankshaft having a crank to which one end of said flexiblemember is connected, a spring connecting the other end of said flexiblemember and having its other end anchored to said frame, and anotherwheel coaxially connected to said 'first wheel, and an endless drivingmember trained over said other wheel and trained over a correspondingwheel on said revolving tube.

6. A revolving tube drive for winding a fibrous strand on cross woundbobbins after passing through a drawing frame, including winding rollersfor supporting the cross wound bobbin, a revolving tube, and means foroscillating said revolving tube so as to maintain a uniform angle normalto the winding axis of said cross wound bobbin, said means comprising aswinging arm with the revolving tube rotatably mounted adjacent the freeend of said arm, means for pivotally supporting said arm about an axisremote from the axis of said tube axis with the axis of said armarranged in the same plane in which the fibrous strand leaves thedrawing frame, a sprocket wheel rotatable about the pivot axis of saidswinging arm, a crankshaft, a sprocket wheel on said revolving tube, asecond sprocket wheel coaxially connected to said first mentionedsprocket wheel, a chain trained over the second sprocket wheel andconnected at one end to a crank on said crankshaft, an anchored springconnected to the other end of said chain, and a second drive chaintrained over the sprocket wheel first named and the sprocket wheel onsaid revolving tube, whereby rotation of said crank will reciprocatesaid chain and oscillate said first named sprocket wheel and rotate saidtube through said second named drive chain in reverse directions.

References Cited in the file of this patent UNITED STATES PATENTS2,964,898 Werner Dec. 20, 1960 2,968,446 Selby Jan. 17, 1961 2,979,276Bider Apr. 1l, 1961 FOREIGN PATENTS 906,788 Germany Mar. 18, 1954 jimi-n

1. A REVOLVING TUBE DRIVE FOR WINDING A FIBROUS STRAND ON CROSS WOUNDBOBBINS AFTER PASSING THROUGH A DRAWING FRAME, INCLUDING WINDING ROLLERSFOR SUPPORTING THE CROSS WOUND BOBBIN, A REVOLVING TUBE, MEANS FOROSCILLATING SAID REVOLVING TUBE SO AS TO MAINTAIN A UNIFORM ANGLE NORMALTO THE WINDING AXIS OF THE CROSS WOUND BOBBIN, SAID MEANS COMPRISING ASWINGING ARM ADJACENT THE FREE END OF WHICH SAID REVOLVING TUBE ISROTATABLY MOUNTED, AND MEANS FOR PIVOTALLY SUPPORTING SAID ARM ABOUT ANAXIS REMOTE FROM THE AXIS OF SAID TUBE AXIS WITH THE AXIS OF SAID ARMARRANGED IN THE PLANE IN WHICH THE SAME FIBROUS STRAND LEAVES THEDRAWING FRAME, WHEREBY THE DIFFERENT LEVELS TO WHICH THE REVOLVING TUBEIS MOVED DURING ITS SWINGING MOVEMENT INCLUDE A CENTER POSITION WHICH ISLOCATED AT THE LEVEL OF THE GRIPPING POINT BETWEEN THE CROSS WOUNDBOBBIN AND SAID WINDING ROLLERS.